4th winningest coach (regular season and playoffs) in NBA history; won 1,037 times in 20 years; as coach-GM, led Boston to 9 NBA titles, including 8 in a row (1959-66); also coached defunct Washington Capitols (1946-49); NBA Coach of the Year award named after him; retired as Celtics coach in 1966 and as GM in '84; club president from 1970 to 1997 and then again from 2001 until his death in 2006.